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430 stainless steelis a ferritic stainless steel primarily made of iron alloyed with chromium as the main element, and very little or no nickel. It is one of the most common and cost-effective grades in the 400 series.
Here is the exact, standard chemical composition of AISI 430 / Type 430 / UNS S43000 / SUS 430 / EN 1.4016:
|
Element |
Content (wt%) |
Purpose / Role |
|---|---|---|
|
Iron (Fe) |
Balance (~80–84%) |
Base metal |
|
Chromium (Cr) |
16.00 – 18.00% |
Main alloying element — forms protective passive oxide layer for corrosion resistance |
|
Carbon (C) |
≤ 0.12% |
Low to minimize carbide formation and improve weldability |
|
Manganese (Mn) |
≤ 1.00% |
Deoxidizer and strengthener |
|
Silicon (Si) |
≤ 1.00% |
Improves oxidation resistance and fluidity |
|
Phosphorus (P) |
≤ 0.040% |
Controlled impurity (harmful in excess) |
|
Sulfur (S) |
≤ 0.030% |
Controlled impurity (harmful in excess) |
|
Nickel (Ni) |
≤ 0.75%(usually < 0.50% or trace) |
Intentionally kept very low or zero — no nickel is added on purpose |
|
Other elements |
Trace amounts (Cu, N, etc.) |
Minimal or none |
Important:430 is deliberately formulated as a nickel-free (or ultra-low-nickel) stainless steel. Nickel is expensive and causes price volatility, so it is minimized to keep 430 affordable and stable in price compared to nickel-bearing grades like 304 (8–10.5% Ni) or 316 (10–14% Ni).
In all these applications, the low nickel + high chromium formula gives reliable performance at a much lower price than 304.
For the same high-quality 430 material, please see our product pages:
430 stainless steel is made mostly of iron + 16–18% chromium, with very little or no nickel intentionally added. That simple composition is exactly why it is:
If you need current pricing, samples, or a comparison with other grades (304, 201, 316, etc.) for your specific project, contact our team — we’ll give you a clear answer and firm offer within minutes.
Gangsteel is your reliable source for genuine, high-quality 430 stainless steel. We look forward to helping you!
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